Home / 1,238,500-1,709,129.47-722,154.25

Finding the Fourth Proportional to 1,238,500, 1,709,129.47 and 722,154.25

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Solution

The fourth proportional to 1,238,500, 1,709,129.47 and 722,154.25 is: 996,572.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,500 : 1,709,129.47 = 722,154.25 : x
  2. Step 2: Convert to fraction form
    1,238,500/1,709,129.47 = 722,154.25/x
  3. Step 3: Cross multiply
    1,238,500x = 1,709,129.47 × 722,154.25
  4. Step 4: Simplify right side
    1,238,500x = 1,234,255,110,560.75
  5. Step 5: Solve for x
    x = 1,234,255,110,560.75/1,238,500
  6. Step 6: Final answer
    x = 996,572.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.